HEAT INSULATION PIPING

摘要

PROBLEM TO BE SOLVED: To provide heat insulation piping capable of being smoothly inserted into a pipe line and the like by eliminating projecting parts to an outer periphery.

SOLUTION: This heat insulation piping has a vacuum layer between an inner pipe 11 and an outer pipe 12. An end part of the heat insulation piping 10 is provided with an exhaust port 30 for evacuation in parallel with the longitudinal direction of the heat insulation piping. This constitution eliminates projection to the outer periphery of the heat insulation piping 10, so that the accommodating work to the pipe line can be improved. A flexible pipe 40 is preferably connected to the exhaust port 30. Thereby the tolerance of a connecting position to an evacuation system can be increased.

COPYRIGHT: (C)2004,JPO